Honestly, Brunette, I think his mixed-up feelings have literally nothing to do with you, and everything to do with the fact that he is an addict who is trying to recover. His head is eighty-seven ways from Sunday right now, and will be for awhile.
He simply is not any better relationship material in early recovery than he was in active addiction.
He may have messed with your head, but it's on you now to stop opening the door to let him in to do so.